<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avatar_box">
        <img src="../assets/1.jpg" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-denglu"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-mima"></el-input>
        </el-form-item>
        <!-- 按钮区 --> 
        <el-form-item class="btns">
          <el-button type="primary" @click=login>登录</el-button>
          <el-button type="info" @click=reseLogintForm>重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<!-- 行为区 -->
<script>
const Qs=require('qs');
export default {
  data(){
    return{
      //登录比奥当的数据绑定对象
      loginForm:{
        username:"",
        password:""
      },
      //表达的验证规则对象
      loginFormRules: {
          //验证用户是否合法
          username: [
            { required: true, message: '请输入登录名称', trigger: 'blur' },//blur失焦
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
          //验证密码是否合法
          password:[
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          ]
      }
    };
  },
  methods: {
    //重置
    
    reseLogintForm(){
      // console.log(this)
    
    // console.log(this)//=>$refs:{loginFormRef:VueComponent}
    
    //resetFields重置
      //loginFormRef是用来获取表单引用对象
      this.$refs.loginFormRef.resetFields()
    },
    login(){
      //表单数据预验证返回tru。
      // e或false，先获取引用对象loginFormRef
      this.$refs.loginFormRef.validate(valid=>{
        // console.log(valid);//=>true或false，
        if(!valid) return;//如果为false则停止，发送请求了就需要包了，需要去main.js全局配置axios
        this.axios.post('/login',{'username':this.loginForm.username,
          'upwd':this.loginForm.password}).then(res=>{
          if(res.data.code===200){
            // console.log(res);
            //将用户登录的状态保存到webStorage中
            sessionStorage.setItem('isLogined',true);
            this.$message.success("登录成功"); 
            this.$router.push('/home');//跳转到home页面
          }else{
            this.$message.error("登录失败");
          }
        })
        
      })
    }
  },
};
</script>
<style lang="less" scoped>
  .login_container{
    background-color: #2b4b6b;
    height: 100%;
  }
  .login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);/* 位移 */
  }
  /* 语法嵌套 */
  .avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    }
  .avatar_box img{
    height: 100%;
    width: 100%;
    border-radius: 50%;
  }
  .login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
  .btns{
    display: flex;
    justify-content: flex-end;
  }
</style>
